Tail water treatment method for aquaculture

Abstract

The invention discloses a tail water treatment method for aquaculture. The tail water treatment method comprises the following steps: S1, sewage pumping operation: realizing pumping work on the bottom of a water body in a square water tank by a pumping pipe; s2, centralized treatment: effectively disturbing fish schools while realizing centralized work of sludge in the whole area of the bottom in the square water tank, and further preventing the fish fries from being sucked into a suction pipe to cause structural damage; s3, self-adaptive overturning is conducted, the situation that the concentration effect is reduced due to the fact that the sludge is pushed to the periphery of the bottom in the square water tank is avoided, and when the extension part shrinks, the deflection plate drives the overturning part to reset to guarantee normal operation of concentration work; s4, precipitation operation, wherein after long-time precipitation, the water body and the sludge are separated from each other and layered; and S5, separation and backflow: the layered water body is sucked into a separation pipe and finally flows back to the interior of the square water tank along a flow channel.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture tail water treatment, in particular to a method for treating tail water used in aquaculture. Background Art

[0002] Tailwater in aquaculture refers to the water that is recycled and finally discharged during the aquaculture process. Tailwater usually contains residual bait, fish excrement and other organic matter produced during the aquaculture process, and can be recycled after proper treatment, or used as a source of agricultural irrigation water.

[0003] After searching, the Chinese patent with publication number CN117263467B includes a fixed carrier fixed on the edge of the pond. The upper surface of the fixed carrier needs to be placed horizontally. A fixed frame is fixed on the upper surface of the fixed carrier near the rear edge, and a sedimentation tank is clamped on the top of the fixed frame. The bottom of the sedimentation tank is set to be disc-shaped and the top is set to be a rectangular box structure.

[0004] In the above patent, a sewage suction pipe is used to realize focused suction and cleaning operations, and the mobile suction method can drive away fish. The return water spray gun with spraying return water can increase the oxygen content of natural air in the return water; the arc-shaped mesh plate and the swing cleaning rod are used to realize the primary filtration of scum and the regular cleaning of the mesh; the filter tank is used to prevent the volcanic rock from sliding during filtration, thereby increasing the contact time between the sewage to be adsorbed and the volcanic rock.

[0005] However, the cleaning operation of the sewage pump driven by the swing mechanism in the above patent only has the effect of pumping out sewage in the area where fish food is spread in the pond. There is still a problem of large amount of sludge accumulation in the rest of the pond, and it is difficult to achieve the expected cleaning effect after long-term use. At the same time, there is no mechanism in the sedimentation tank to separate the upper water body from the bottom sludge. When the sewage discharge mechanism is working, part of the sludge will still be mixed into the upper water body, further increasing the workload of subsequent filtration operations. Summary of the invention

[0006] The purpose of the present invention is to provide a tail water treatment method for aquaculture, which has the advantages of centralized suction and synchronous separation and solves the problems raised in the background technology.

[0007] To achieve the above object, the present invention provides the following technical solution: a method for treating tail water for aquaculture, comprising the following steps: S1. Sewage pumping operation: The eccentric pump drives the whole structure to work, and the suction pipe realizes the suction work of the bottom of the water body in the square pool. During this process, the sludge mixed with water is continuously sucked into the suction pipe and finally discharged into the sedimentation tank; S2. Centralized treatment: During the sewage pumping operation, the centralized components work synchronously. At this time, the lifting of the centralized components realizes the reciprocating expansion and contraction of the extension part, and the expansion and contraction of the fixed ring enables the extension part to realize horizontal reciprocating expansion and contraction at the bottom of the square pool. This process can effectively disturb the fish school while realizing the centralized work of the sludge in the entire area at the bottom of the square pool, further preventing the fish fry from being sucked into the suction pipe and causing structural damage; S3, Adaptive flipping: During centralized processing, the flipping part works synchronously and when the extension part expands, the deflection plate drives the flipping part to rotate 90 degrees synchronously. At this time, the bottom end of the centralized component does not contact the inner wall of the square water tank, thereby avoiding pushing the sludge to the surroundings of the bottom of the square water tank and causing a decrease in the centralized effect. When the extension part contracts, the deflection plate drives the flipping part to reset, and the centralized work is carried out normally. S4, sedimentation operation: The sewage sucked into the sedimentation tank naturally begins to precipitate under the action of the sedimentation components and flocculants. After a long period of sedimentation, the water and sludge are separated from each other and stratified, and the sludge continues to be stored in the sedimentation tank; S5. Separation and reflux: While the sedimentation operation is in progress, the separation unit works synchronously and realizes the suction and reflux operation of the stratified water body. The stratified water body is sucked into the separation pipe and finally flows back to the inside of the square water pool along the flow channel.

[0008] Preferably, it includes a driving component, a concentrating component and a sedimentation component, the concentrating component includes an extension part and a flipping part, the sedimentation component includes a separation part, a suction pipe is passed through and fixedly connected to one corner of the square water pool, an eccentric pump is passed through and fixedly connected to the middle section of the other end of the suction pipe, a driving shaft is passed through and transmission-connected to the axis center of the eccentric pump, and the other end of the suction pipe extends to the interior of the sedimentation component.

[0009] Preferably, the driving assembly includes a half gear that penetrates and is fixedly connected to one axial side of the driving shaft to realize the transmission of the driving shaft motion, a lifting column is provided on one side of the outer contour of the half gear, and a tooth portion is provided on the outer contour of the lifting column near the bottom end, the half gear and the tooth portion are intermittently meshed and transmission connected, the top end of the lifting column is fixedly connected to a transmission rod, the other end of the transmission rod is fixedly connected to a connecting rod, and the axial ends of the connecting rod are respectively fixedly connected to the centralizing assembly and the precipitation assembly.

[0010] Preferably, the extension portion of the centralized component includes a transmission ring fixedly connected to one end of the connecting rod pointing to the square water pool, the bottom end of the transmission ring is fixedly connected to a transmission frame sleeved on the outside of the suction pipe, the bottom end of the transmission frame is fixedly connected to a lifting ring, the bottom end of the lifting ring is provided with an X-shaped frame fixedly connected to the inside of the square water pool, the lifting ring and the side of the outer contour of the fixed ring pointing to the inside of the square water pool are both connected to the same horizontally arranged X-shaped frame through a pin drive, and the other end of the X-shaped frame is rotatably connected to a coupling plate through a pin; Four X-shaped frames and three coupling plates are arranged around the bottom of the inner wall of the square pool. The four X-shaped frames, three coupling plates, a lifting ring and a fixing ring together form a square frame that matches the size of the inner wall of the square pool.

[0011] Preferably, the flipping part of the concentrated component includes a sleeve and a spline shaft fixedly connected to the vertical ends of the X-shaped frame and synchronously telescoped with the X-shaped frame, the side of the sleeve close to the lifting ring is penetrated and connected to the spline shaft in transmission, wherein the bottom end of the spline shaft at the bottom is fixedly connected with a cleaning pad 1, the bottom end of the sleeve at the bottom is fixedly connected with a cleaning pad 2, the end of the spline shaft at the bottom close to the fixed ring is penetrated and connected with a transmission plug 1 in a limiting transmission, the end of the sleeve at the bottom close to the coupling plate is penetrated and connected with a transmission plug 2 in a limiting transmission, the other end of the transmission plug 2 is fixedly connected with a fixed plate arranged on the coupling plate, the middle section of the fixed plate pointing to the inside of the square water pool is fixedly connected to a limiting piece, and a deflection plate is fixedly connected to the side of the outer contour of the sleeve pointing to the inside of the square water pool at the same horizontal position as the limiting piece.

[0012] Preferably, the deflection plate is tilted and the tilt angle is fixed at forty-five degrees, and the tilt angle of the deflection plate is set to the side away from the spline shaft along the axial direction of the sleeve.

[0013] Preferably, the separation part of the sedimentation assembly includes a transmission plate fixedly connected to the end of the connecting rod away from the square water pool, the bottom end of the transmission plate is fixedly connected to a piston rod, the bottom end of the piston rod is fixedly connected to a fixing frame, the bottom end of the fixing frame is fixedly connected to a conducting ring, the axis of the conducting ring is penetrated by and covered with a piston plate, and the piston plate is rotatably connected to the upper surface of the conducting ring through a pin shaft limit.

[0014] Preferably, a separation tube is sleeved on the outer contour of the piston rod, the fixing frame, the conducting ring and the piston plate, and a plurality of filter holes are arranged around the outer contour of the separation tube near the middle section. The bottom end of the separation tube is fixedly connected to a sedimentation tank for sedimentation treatment of sewage sucked by the suction pipe. The top end of the separation tube is connected to a flow channel, and the other end of the flow channel extends to the top of the inside of the square water pool (1).

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a driving component and uses the power source during the suction operation to synchronously control the operation of other structures, thereby eliminating the operating steps during step-by-step control and further improving the automation level and work efficiency of the device.

[0016] 2. The present invention sets up a centralized component to centrally collect and process the sludge on the bottom of the pool during the suction operation, thereby achieving the cleaning operation of all areas of the bottom of the pool while further improving the suction efficiency. In the process of concentration, the working state of the automatic adaptation device of the turning part further improves the efficiency of sludge concentration.

[0017] 3. The present invention provides a sedimentation component. When the pumped sewage is precipitated, the sedimentation component further separates the water body and the sludge, and the separated water body naturally flows back into the pool, which greatly reduces the probability of sludge mixing into the water body and affecting the sedimentation quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a cross-sectional view of the main structure of the present invention; Figure 3 This is a schematic diagram of the structure of the drive assembly of the present invention; Figure 4 It is a schematic diagram of the overall structure of the centralized components of the present invention; Figure 5 This is a schematic diagram of the structure of the extension part of the centralized component of the present invention; Figure 6 This is a schematic diagram of the structure of the turning part of the centralized component of the present invention; Figure 7 This is a schematic diagram of the structure of the precipitation component of the present invention; Figure 8 It is a schematic diagram of the structure of the separation part of the present invention; Fig. 9 It is the overall workflow diagram of the present invention.

[0019] In the figure: 1. square water pool; 11. suction pipe; 12. eccentric pump; 13. drive shaft; 2. half gear; 21. lifting column; 22. tooth part; 23. transmission rod; 24. connecting rod; 3. transmission ring; 31. transmission frame; 32. lifting ring; 33. fixing ring; 34. X-shaped frame; 35. coupling plate; 4. sleeve; 41. spline shaft; 42. cleaning pad 1; 43. cleaning pad 2; 44. transmission plug 1; 45. transmission plug 2; 46. fixing plate; 47. deflection plate; 48. limiter; 5. transmission plate; 51. piston rod; 52. fixing frame; 53. conduction ring; 54. piston plate; 55. sedimentation tank; 56. separation pipe; 57. flow channel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0021] See also Figures 1 to 9 The present invention provides a technical solution: a method for treating tail water for aquaculture, comprising the following steps: S1. Sewage pumping operation: the eccentric pump 12 is driven to drive the whole structure to work, and the suction pipe 11 realizes the suction work of the bottom of the water body in the square water pool 1. During this process, the sludge mixed with the water body is continuously sucked into the suction pipe 11 and finally discharged into the sedimentation tank 55; S2, centralized treatment: while the sewage is being pumped, the centralized components work synchronously, at this time, the lifting and lowering of the centralized components realizes the reciprocating extension of the extension part, and the extension and retraction of the fixed ring 33 enables the extension part to realize the horizontal reciprocating extension and retraction at the bottom of the square pool 1, this process realizes the centralized work of the sludge in the entire area of ​​the bottom of the square pool 1 and effectively disturbs the fish school, further preventing the fish fry from being sucked into the suction pipe 11 and causing structural damage; S3, adaptive flipping: while the centralized processing is in progress, the flipping part works synchronously and when the extension part expands, the deflection plate 47 drives the flipping part to rotate synchronously by 90 degrees. At this time, the bottom end of the centralized component does not contact the inner wall of the square water pool 1, thereby avoiding pushing the sludge to the surroundings of the bottom of the square water pool 1 and causing the centralized effect to decrease. When the extension part contracts, the deflection plate 47 drives the flipping part to reset, and the centralized work is carried out normally. S4, sedimentation operation: The sewage sucked into the sedimentation tank 55 naturally begins to precipitate under the action of the sedimentation components and flocculants. After a long period of sedimentation, the water and the sludge are separated from each other and stratified, and the sludge continues to be stored in the sedimentation tank 55; S5, separation and reflux: while the sedimentation operation is in progress, the separation unit works synchronously and realizes the suction and reflux operation of the stratified water body. The stratified water body is sucked into the separation pipe 56 and finally flows back to the inside of the square water pool 1 along the flow channel 57.

[0022] In the present method, an eccentric pump 12 is used to achieve suction on the suction pipe 11, and the suction pipe 11 further performs sewage pumping operation on the inside of the square water pool 1. The sewage accumulated at the bottom of the square water pool 1 is sucked into the suction pipe 11 and further discharged into the sedimentation tank 55 of the sedimentation component and remains stationary. At this time, the sewage is separated from the sludge by the action of the flocculant and sedimentation, and stratification occurs. The water is concentrated in the upper part of the sedimentation tank 55 and the sludge is deposited at the bottom of the sedimentation tank 55.

[0023] During the sewage pumping operation, the centralized component works synchronously, and the sludge at the bottom of the square water pool 1 is gradually collected by the centralized component near the sewage pumping port of the suction pipe 11, so that the sewage pumping operation inside the square water pool 1 as a whole can be realized without adjusting the sewage pumping angle, and the problem of sludge accumulation in the dead corners of sewage pumping can be further solved; and in the working process of the centralized component, the adaptive flipping of its flipping part can ensure that the centralized accumulation operation of the sludge only occurs during the contraction of the centralized component, thereby avoiding the centralized component from pushing the sludge to the surrounding of the inner wall of the square water pool 1 when expanding, resulting in unsatisfactory concentration effect.

[0024] During the sedimentation operation, the separation part of the sedimentation component works synchronously to suck the separated water into the separation pipe 56 and finally return it into the square water tank 1 along the flow channel 57, thereby realizing the water recovery operation. While the water flows along the flow channel 57, the water is further absorbed and purified by the active agent arranged on the flow channel 57. In the separation and suction process, the structural characteristics of the separation part further filter the sludge to avoid small particles of sludge from mixing into the water and causing pollution, thereby reducing the purification and filtration burden of the water on the flow channel 57. Embodiment 2:

[0025] It includes a driving component, a concentrating component and a sedimentation component. The concentrating component includes an extension part and a flipping part. The sedimentation component includes a separation part. A suction pipe 11 is passed through and fixedly connected to one corner of the square water pool 1. An eccentric pump 12 is passed through and fixedly connected to the middle section of the other end of the suction pipe 11. The axis of the eccentric pump 12 is passed through and transmission-connected to a driving shaft 13. The other end of the suction pipe 11 extends to the interior of the sedimentation component.

[0026] The driving assembly includes a half gear 2 that is penetrated and fixedly connected to one axial side of the driving shaft 13 to realize the motion transmission of the driving shaft 13. A lifting column 21 is provided on one side of the outer contour of the half gear 2. A tooth portion 22 is provided on the outer contour of the lifting column 21 near the bottom end. The half gear 2 and the tooth portion 22 are intermittently meshed and transmission-connected. A transmission rod 23 is fixedly connected to the top end of the lifting column 21. A connecting rod 24 is fixedly connected to the other end of the transmission rod 23. The two axial ends of the connecting rod 24 are respectively fixedly connected to the centralizing assembly and the precipitation assembly.

[0027] As can be seen from the first embodiment, the eccentric pump 12 is used as the power source of the device. The rotation of the eccentric pump 12 drives the drive shaft 13 to rotate and realizes the suction work of the suction pipe 11. The suction effect of the eccentric pump 12 on the suction pipe 11 belongs to the prior art and will not be described in detail here. The rotation of the drive shaft 13 further drives the drive assembly to work synchronously. The specific working process of the drive assembly is as follows: When the driving shaft 13 rotates, the driving shaft 13 drives the half gear 2 to rotate synchronously. Since the half gear 2 is intermittently meshed with the tooth portion 22, when the half gear 2 is meshed with the tooth portion 22, the half gear 2 rotates with the driving shaft 13, which causes the tooth portion 22 and the lifting column 21 to rise synchronously. When rising to the limit position, the meshing of the half gear 2 and the tooth portion 22 is disengaged. At this time, the lifting column 21 and the tooth portion 22 naturally fall down under the action of gravity and return to the initial position, thereby realizing the automatic resetting of the drive component structure, that is, during the movement of the lifting column 21, it rises slowly and intermittently with the rotation of the half gear 2 and falls rapidly after rising to the limit position.

[0028] During the lifting process of the lifting column 21 , the transmission rod 23 and the connecting rod 24 are lifted and lowered synchronously. Furthermore, the concentration component and the precipitation component are lifted and lowered synchronously, thereby realizing synchronous operation of the entire device. Embodiment three:

[0029] The extension part of the centralized assembly includes a transmission ring 3 fixedly connected to one end of the connecting rod 24 pointing to the square pool 1, the bottom end of the transmission ring 3 is fixedly connected to a transmission frame 31 sleeved on the outside of the suction pipe 11, the bottom end of the transmission frame 31 is fixedly connected to a lifting ring 32, and the bottom end of the lifting ring 32 is provided with an X-shaped frame 34 fixedly connected to the inside of the square pool 1, and the lifting ring 32 and the fixed ring 33 are both connected to the same horizontally arranged X-shaped frame 34 on the side of the outer contour pointing to the inside of the square pool 1 through a pin shaft transmission, and the other end of the X-shaped frame 34 is rotatably connected to a coupling plate 35 through a pin shaft; Four X-shaped frames 34 and three coupling plates 35 are arranged around the bottom of the inner wall of the square pool 1. The four X-shaped frames 34, three coupling plates 35, a lifting ring 32 and a fixing ring 33 together form a square frame adapted to the size of the inner wall of the square pool 1.

[0030] The flipping part of the centralized assembly includes a sleeve 4 and a spline shaft 41 fixedly connected to the vertical ends of the X-shaped frame 34 and synchronously telescopically extended and retracted with the X-shaped frame 34. The side of the sleeve 4 close to the lifting ring 32 is penetrated and connected to the spline shaft 41 in transmission, wherein the bottom end of the spline shaft 41 is fixedly connected with a cleaning pad 1 42, and the bottom end of the sleeve 4 is fixedly connected with a cleaning pad 2 43. The end of the spline shaft 41 close to the fixed ring 33 is penetrated and connected with a transmission plug 1 44 in a limited transmission manner. The end of the sleeve 4 close to the coupling plate 35 is penetrated and connected with a transmission plug 2 45 in a limited transmission manner. The other end of the transmission plug 2 45 is fixedly connected with a fixed plate 46 arranged on the coupling plate 35. The middle section of the fixed plate 46 pointing to the inner end of the square pool 1 is fixedly connected with a limiting member 48, and a deflection plate 47 is fixedly connected to the side of the outer contour of the sleeve 4 pointing to the inner side of the square pool 1 at the same horizontal position as the limiting member 48.

[0031] The deflection plate 47 is tilted and the tilt angle is fixed at 45 degrees. The tilt angle of the deflection plate 47 is set to the side away from the spline shaft 41 along the axial direction of the sleeve 4.

[0032] It can be seen from Example 2 that when the eccentric pump 12 starts to work, the transmission ring 3 rises and falls synchronously with the connecting rod 24. At this time, the transmission frame 31 and the lifting ring 32 rise and fall synchronously, and the fixed ring 33 is fixed inside the square water pool 1, that is, the relative distance between the lifting ring 32 and the fixed ring 33 changes synchronously. During the descent of the transmission ring 3, the lifting ring 32 gradually approaches the fixed ring 33, and when the transmission ring 3 rises, the lifting ring 32 gradually moves away from the fixed ring 33.

[0033] During the lifting and lowering process of the lifting ring 32, since the fixed ring 33 is fixed, the X-shaped frame 34 of the extension part is synchronously extended and retracted. Since the four X-shaped frames 34, the three coupling plates 35, the lifting ring 32 and the fixed ring 33 together form a square frame adapted to the inner wall size of the square water pool 1, when the X-shaped frames 34 expand, the square frame composed of them expands synchronously and contacts the inner wall of the square water pool 1. When the X-shaped frames 34 shrink, the square frame composed of them shrinks synchronously and collects the sludge accumulated at the bottom of the square water pool 1 to the vicinity of the sewage suction port of the suction pipe 11, thereby realizing the centralized treatment of the sludge accumulated at the bottom of the square water pool 1 to improve the sewage suction efficiency of the device and its overall purification effect on the bottom of the square water pool 1.

[0034] During the expansion and contraction of the X-shaped frame 34, the turnover part works synchronously, so that the centralized component performs the sludge accumulation operation only during its contraction process. The specific working process of the turnover part is as follows: When the X-shaped frame 34 is extended or retracted, the sleeve 4 and the spline shaft 41 are extended or retracted synchronously. Since the sleeve 4 and the spline shaft 41 are connected by a spline transmission, that is, when the sleeve 4 has a tendency to rotate, it will drive the spline shaft 41 to rotate synchronously. In the process of the sleeve 4 moving synchronously with the X-shaped frame 34, the deflection plate 47 moves synchronously in the water body inside the square pool 1. Since the deflection plate 47 is inclined and the inclination angle is fixed at 45 degrees, when the deflection plate 47 moves, the reaction force generated by the water body on the deflection plate 47 will cause The deflection plate 47 drives the sleeve 4 to deflect, and the deflection of the sleeve 4 further causes the spline shaft 41, the cleaning pad 1 42 and the cleaning pad 2 43 to flip synchronously. At this time, the flipped cleaning pad 1 42 and the cleaning pad 2 43 are in a horizontal position and have no contact with the inner wall of the bottom of the square water tank 1, thereby ensuring that during the expansion process of the centralizing component, the cleaning pad 1 42 and the cleaning pad 1 42 do not push the sludge inside the square water tank 1 to avoid pushing the sludge to the surroundings and causing a decrease in the centralizing effect.

[0035] The flipping of the deflection plate 47 will be blocked by the limit member 48, resulting in the maximum flipping angle of the deflection plate 47 being ninety degrees, so that the maximum flipping angle of the cleaning pad 1 42 and the cleaning pad 2 43 is only in the horizontal position. During the contraction of the sleeve 4, the deflection plate 47 is also flipped in the opposite direction under the action of the water body inside the square water pool 1. When the deflection plate 47 flips to the vertical position, the cleaning pad 1 42 and the cleaning pad 2 43 come into contact and rub against the inner wall of the square water pool 1. At this time, under the friction force of the inner wall of the square water pool 1, the cleaning pad 1 42 and the cleaning pad 2 43 cannot continue to rotate, thereby ensuring that the cleaning pad 1 42 and the cleaning pad 2 43 will only switch between the horizontal position and the vertical position, avoiding deviations in the deflection angles of the cleaning pad 1 42 and the cleaning pad 2 43 and affecting the concentration effect of the device on the sludge.

[0036] Furthermore, by setting the transmission plug 1 44 and the transmission plug 2 45, when the sleeve 4 and the spline shaft 41 are extended and retracted along with the fixing ring 33, the flipping of the sleeve 4 and the spline shaft 41 will not affect the extension and retraction process of the fixing ring 33, thereby further ensuring the transmission effect between the concentrated component structures.

[0037] On the other hand, along with the extension and retraction process of the spline shaft 41, the cleaning pad 42 is synchronously extended and retracted and scrapes against the inside of the sleeve 4, so that during the extension and retraction process of the spline shaft 41, the cleaning pad 42 is squeezed and cleaned inside the sleeve 4. Embodiment 4:

[0038] The separation part of the sedimentation assembly includes a transmission plate 5 fixedly connected to the end of the connecting rod 24 away from the square water pool 1, the bottom end of the transmission plate 5 is fixedly connected to a piston rod 51, the bottom end of the piston rod 51 is fixedly connected to a fixing frame 52, the bottom end of the fixing frame 52 is fixedly connected to a conducting ring 53, the axis of the conducting ring 53 is penetrated and covered with a piston plate 54, and the piston plate 54 is rotatably connected to the upper surface of the conducting ring 53 by a pin shaft.

[0039] A separation tube 56 is sleeved on the outer contour of the piston rod 51, the fixing frame 52, the conducting ring 53 and the piston plate 54, and a plurality of filtering holes are opened around the outer contour of the separation tube 56 near the middle section. The bottom end of the separation tube 56 is fixedly connected to a sedimentation tank 55 for sedimentation treatment of sewage sucked by the suction pipe 11, and the top end of the separation tube 56 is connected to a flow channel 57, and the other end of the flow channel 57 extends to the top of the inside of the square water pool 1.

[0040] When the sewage is pumped into the sedimentation tank 55, the water and sludge in the sewage are separated and stratified under the combined action of the flocculant and the sedimentation. At this time, the water is located at the upper part of the sedimentation tank 55 and the sludge is accumulated at the bottom of the sedimentation tank 55. At this time, the separation part of the sedimentation component works synchronously to further filter and pump the upper water to achieve water purification and recovery operations. The specific working process of the sedimentation component is as follows: When the connecting rod 24 is raised and lowered, the transmission plate 5, the piston rod 51, the fixing frame 52, the conducting ring 53 and the piston plate 54 are raised and lowered synchronously inside the separation tube 56. When the connecting rod 24 is raised, the conducting ring 53 and the piston plate 54 are raised synchronously. At this time, the bottom of the separation tube 56 is pumped into a negative pressure state, and the upper water body in the sedimentation tank 55 is sucked into the separation tube 56 along the filter holes opened in the middle section of the separation tube 56 under the action of atmospheric pressure. In this process, the piston plate 54 is always tightly fitted to the upper surface of the conducting ring 53 under the action of its pin shaft, and the filter holes of the separation tube 56 can further realize the filtering and purification operation of the upper water body inside the sedimentation tank 55.

[0041] When the connecting rod 24 descends, the conducting ring 53 and the piston plate 54 descend synchronously. At this time, the piston plate 54 flips over and separates from the conducting ring 53 under the action of its pin shaft, that is, a gap appears between the conducting ring 53 and the piston plate 54. As the conducting ring 53 and the conducting ring 53 descend and the inside of the separation tube 56 is pressurized, the water at the bottom of the separation tube 56 is introduced into the upper part of the separation tube 56 along the gap between the conducting ring 53 and the piston plate 54. Further, when the connecting rod 24 rises again, the water in the upper part of the separation tube 56 is synchronously lifted and enters the flow channel 57.

[0042] The water entering the flow channel 57 is further purified by the activator arranged on the inner wall of the flow channel 57 and finally flows back to the inside of the square water pool 1, thereby achieving the purification and recovery operation of the water.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for treating tail water for aquaculture, characterized in that: The following steps are involved: S1. Sewage pumping operation: the eccentric pump (12) is driven to drive the whole structure to work, and the suction pipe (11) realizes the suction work of the bottom of the water body in the square water pool (1). During this process, the sludge mixed with the water body is continuously sucked into the suction pipe (11) and finally discharged into the sedimentation tank (55); S2, centralized treatment: while the sewage is being pumped out, the centralized components work synchronously, at which point the lifting of the centralized components realizes the reciprocating expansion and contraction of the extension part, and the expansion and contraction of the fixed ring (33) enables the extension part to realize the horizontal reciprocating expansion and contraction at the bottom of the square pool (1). This process realizes the centralized work of the sludge in the entire area of ​​the bottom of the square pool (1) and effectively disturbs the fish school, further preventing the fish fry from being sucked into the suction pipe (11) and causing structural damage; S3, adaptive turning: while the centralized processing is in progress, the turning part works synchronously and when the extension part expands, the deflection plate (47) drives the turning part to rotate synchronously by 90 degrees. At this time, the bottom end of the centralized component does not contact the inner wall of the square water pool (1), thereby avoiding pushing the sludge to the surroundings of the bottom of the square water pool (1) and causing the concentration effect to decrease. When the extension part contracts, the deflection plate (47) drives the turning part to reset. At this time, the centralized processing is carried out normally. S4, sedimentation operation: the sewage sucked into the sedimentation tank (55) naturally begins to precipitate under the action of the sedimentation components and flocculants. After a long period of sedimentation, the water and the sludge are separated from each other and stratified, and the sludge continues to be stored in the sedimentation tank (55); S5, separation and reflux: while the sedimentation operation is in progress, the separation unit works synchronously and realizes the suction and reflux operation of the stratified water body. The stratified water body is sucked into the separation pipe (56) and finally flows back to the inside of the square water pool (1) along the flow channel (57).

2. The method for treating tail water for aquaculture according to claim 1, characterized in that: The invention comprises a driving component, a concentrating component and a settling component, wherein the concentrating component comprises an extension part and a flipping part, and the settling component comprises a separation part. A suction pipe (11) penetrates through and is fixedly connected to one corner of the square water pool (1), an eccentric pump (12) penetrates through and is fixedly connected to the middle section of the other end of the suction pipe (11), a driving shaft (13) penetrates through and is transmission-connected to the axis center of the eccentric pump (12), and the other end of the suction pipe (11) extends into the interior of the settling component.

3. The method for treating tail water for aquaculture according to claim 2, characterized in that: The driving assembly comprises a half gear (2) which penetrates through and is fixedly connected to one axial side of the driving shaft (13) to realize the transmission of the motion of the driving shaft (13); a lifting column (21) is provided on one side of the outer contour of the half gear (2); a toothed portion (22) is provided on the outer contour of the lifting column (21) near the bottom end; the half gear (2) and the toothed portion (22) are intermittently meshed and transmission-connected; a transmission rod (23) is fixedly connected to the top end of the lifting column (21); a connecting rod (24) is fixedly connected to the other end of the transmission rod (23); and two axial ends of the connecting rod (24) are respectively fixedly connected to the concentrating assembly and the settling assembly; The extension portion of the centralized assembly comprises a transmission ring (3) fixedly connected to one end of the connecting rod (24) pointing to the square water pool (1); the bottom end of the transmission ring (3) is fixedly connected to a transmission frame (31) sleeved on the outside of the suction pipe (11); the bottom end of the transmission frame (31) is fixedly connected to a lifting ring (32); the bottom end of the lifting ring (32) is provided with an X-shaped frame (34) fixedly connected to the inside of the square water pool (1); the sides of the outer contours of the lifting ring (32) and the fixed ring (33) pointing to the inside of the square water pool (1) are both connected to the same horizontally arranged X-shaped frame (34) through a pin drive; the other end of the X-shaped frame (34) is rotatably connected to a coupling plate (35) through a pin; Four X-shaped frames (34) and three coupling plates (35) are arranged around the bottom of the inner wall of the square water pool (1); the four X-shaped frames (34), the three coupling plates (35), the lifting ring (32) and the fixing ring (33) together form a square frame that matches the size of the inner wall of the square water pool (1); The turning part of the centralized assembly comprises a sleeve (4) and a spline shaft (41) fixedly connected to the vertical ends of the X-shaped frame (34) and synchronously telescopic with the X-shaped frame (34); a side of the sleeve (4) close to the lifting ring (32) is penetrated and is transmission-connected to the spline shaft (41); a first cleaning pad (42) is fixedly connected to the bottom end of the spline shaft (41); a second cleaning pad (43) is fixedly connected to the bottom end of the sleeve (4); and a second end of the spline shaft (41) close to the fixing ring (33) is penetrated and is transmission-connected to the spline shaft (41). A transmission plug (44) is connected, one end of the sleeve (4) at the bottom close to the coupling plate (35) is penetrated and connected to a transmission plug (45) in a limiting transmission manner, the other end of the transmission plug (45) is fixedly connected to a fixing plate (46) arranged on the coupling plate (35), the middle section of the fixing plate (46) pointing to the inside of the square pool (1) is fixedly connected to a limiting member (48), and a deflection plate (47) is fixedly connected to the side of the outer contour of the sleeve (4) pointing to the inside of the square pool (1) at the same horizontal position as the limiting member (48).

4. The method for treating tail water for aquaculture according to claim 3, characterized in that: The deflection plate (47) is tilted and the tilt angle is fixed at 45 degrees. The tilt angle of the deflection plate (47) is set to the side away from the spline shaft (41) along the axial direction of the sleeve (4).

5. The method for treating tail water for aquaculture according to claim 2, characterized in that: The separation portion of the sedimentation assembly comprises a transmission plate (5) fixedly connected to an end of the connecting rod (24) away from the square water pool (1), and a piston rod (51) is fixedly connected to the bottom end of the transmission plate (5).

6. The method for treating tail water for aquaculture according to claim 5, characterized in that: The bottom end of the piston rod (51) is fixedly connected to a fixing frame (52), and the bottom end of the fixing frame (52) is fixedly connected to a conducting ring (53).

7. The method for treating tail water for aquaculture according to claim 6, characterized in that: The axis of the conducting ring (53) is penetrated by and covered with a piston plate (54), and the piston plate (54) is rotationally connected to the upper surface of the conducting ring (53) via a pin shaft.

8. The method for treating tail water for aquaculture according to claim 7, characterized in that: A separation tube (56) is sleeved on the outer contours of the piston rod (51), the fixing frame (52), the conducting ring (53) and the piston plate (54), and a plurality of filtering holes are formed around the outer contour of the separation tube (56) near the middle section. The bottom end of the separation tube (56) is fixedly connected to a sedimentation tank (55) for sedimentation treatment of sewage sucked by the suction tube (11), and the top end of the separation tube (56) is connected to a flow channel (57), and the other end of the flow channel (57) extends to the top end of the inside of the square water pool (1).

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